Rim contractor



Dec. 11, 1928. 1,694,741

L. HAGNER. JR

RIM CONTRACTOR Filed July e, 1925 Patented Dec. ll, 1928..

LEWIS HAGNER, JR., OI NORRISTOWN, PENNSYLVANIA.

RIM CONTRACTOR.

Application filed July 6, 1925. Serial No. 41,786.

The present invention relates to an improved rim contractor, and the purpose of the invention is toprovide a tool or this character involving an improved construc tion, whereby the tool. may be first operated to separate the adjoining ends 01? the rim, and then by placing the operating lever in a different position, the rim may be contracted for the purpose of removing or replacing a tire.

Another purpose is to provide a tool including a pair of rim engaging clamps, with a link connected to one clamp and an operating lever connected to the other clamp, there being an adjustable connection between the lever and the fulcrum-link, which will permit the operating lever to be disposed in one position for separating the adjoining ends of the rim, and then placed in another position, so that when the lever is again operated it is possible to contract the rim.

It is to be understood that the particulars herein given are in no way limitive, and that while still keeping within the scope of the invention, any desired modification of details and proportions may be made in the construction of theappliance according to circumstances. e

The invention comprises further features and combination of parts to be hereinafter set forth, shown in the drawings and claimed.

In the drawings:

Figure l is a view in elevation showing the tool applied to a rim for separating the adjoining ends.

Figure 2 is a view in said elevation showing the tool positioned and in the act of contracting the rim. I

Figure 3 is a sectional View or" the tool.

Figure l is a view in end elevation of one of the rim clamps.

Referring more especially to the drawings, 1 and 2 identifies a pa r of clamps which are adjustable for a clamping engagement with any rim of standard type or construction. 'l he clamps are of similar construction, there- :t'ore the description of one will sui'lice for both. However, the clamp 1, as more clearly shown in Figure 4 comprises the two opposed parts 2* and 2", which engage with the opposite edges of a rim, a bolt 2 being employed for holding the parts 2' and 2 in clamping engagement with the rim.

Corresponding ends of the two parts 2 and 2* receive a bolt 3, on which a fulcrum-link l is pivotally mounted. This link has spaced arms 5, which are of arcuate formation. The ends of the arms 5 receive a bolt 7. and pivotally mounted on the bolt 3 of the clamp 2 is a lever 6, which is also of arcuate formation, and the free end of its operating lever 6 carries a laterally extending hand clamp or knot 14.

Constructed in the operating lever at a pointnear its pivot is a slot 8, which is slightly of angular formation. One edge of the slot, at a point adjacent where the two parts of the slot extend at slight angles, is provided with a laterally off-set recess 11, which at times, as will be hereinafter set forth, engage with the shank of the bolt 7. One end of the slot 8 has an enlarged laterally otf-set circular portion 10, which may, at times, receive the shank of the bolt 7.

One edge of the lever 6, that is the edge facing the clamp 1 has a recess 15 which is defined by the lug 17.

In using the rim contractor, the clamps l and 2 are placed as shown in Figure 1 at a time prior to separating the adjacent ends of the rim, and then the lever 6 is positioned so that the recess 11 may engage with the shank of the bolt 7, in such wise as to permit a screwdriver bolt or any other suitable article 11* to engage transversely of the recess 15, the shank of the screwdriver resting upon the edges of the arms 5 adjacent their terminals, thereby acting as what may be termed as an exterior removable fulcrum. With the lever in such position it is rocked upon the screwdriver in the manner shown in Figure l, the recess 11 moving around the shank of the bolt '7, the clamp 2 being pulled in the direction oi the arrow A, and thereby separating the adjacent ends of the rim. In operating the lever 6 in this manner, there is a certain amount of pressure on the screwdriver and on the link at in the direction of the clamp 1, such pressure tending to permit one end of the rim from moving in a direction in which the other end of the rim is being moved to separate said ends.

After the above step of separating the ends of the rim is accomplished the rim may be contracted. For instance the screwdriver or bolt at a is removed, and the lever 6 is then positioned as in Figure 2 with the recesses 10 or 11 engaged with the shank of the bolt 7 and then the lever 6 is moved in a direction indicated by the arrow 32, thereby contracting the rim in the manner indicated in Figure 2.

The invention having been set forth What is claimed is:

In a rim contractor, the combination with a pair of clamps for clamping engagement with a rim adjacent its separable ends 01: alulcruming' link operatively pivoted to one of the clamps and provided With spaced arms, a pivot bolt passing transversely of the ends 5 the arms, an operating lever operatively pivoted on the other clamp and having a slot adjacent its pivot and extending in a direction with the lever, said slot being of angular formation, one edge of the operating lever having a recess through which an implement may transversely engage and rest on the edges of said arms, whereby upon moving the lever, the levermay pull upon one clamp and cause pressure in direction of the other clamp and thereby separate the adjacent ends of the rim, one edge of the slot having a recess to receive the transverse bolt after removing the implement whereby upon moving the operating lever further, the rim may be contracted.

In testimony whereof I afliX my signature.

LEl VIS I-IAGNER, JR. 

